MLA

Barrie, J. M. (James Matthew), 1860-1937. Peter Scott, portrait. 61 (Art). 1934. https://collections.library.yale.edu/catalog/2042461.

APA, 6th edition

Barrie, J. M. (James Matthew), 1860-1937. (["61 (Art)"])(1934)[Peter Scott, portrait]. https://collections.library.yale.edu/catalog/2042461.